The Natya Shastra is an ancient Sanskrit text that outlines the principles of Indian performing arts, covering aspects such as acting techniques, music, costumes, and dance. Attributed to the sage Bharata, it consists of 36 chapters and is considered a critical resource for understanding traditional Indian drama, dance, and music, including the rasa and bhava concepts that capture emotional essence and states of mind within performances. Its historical significance and the detailed classification of artistic elements make it a foundational work in the study of performance arts in India.